1 // Set iterator invalidation tests
2 
3 // Copyright (C) 2003-2020 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library.  This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10 
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 // GNU General Public License for more details.
15 
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3.  If not see
18 // <http://www.gnu.org/licenses/>.
19 
20 #include <debug/set>
21 #include <iterator>
22 #include <testsuite_hooks.h>
23 
24 using __gnu_debug::set;
25 using std::advance;
26 
27 // Erase
test02()28 void test02()
29 {
30   set<int> v;
31   for (int i = 0; i < 20; ++i)
32     v.insert(i);
33 
34   // Single element erase (middle)
35   set<int>::iterator before = v.begin();
36   set<int>::iterator at = before;
37   advance(at, 3);
38   set<int>::iterator after = at;
39   ++after;
40   v.erase(at);
41   VERIFY(before._M_dereferenceable());
42   VERIFY(at._M_singular());
43   VERIFY(after._M_dereferenceable());
44 
45   // Multiple element erase
46   before = v.begin();
47   at = before;
48   advance(at, 3);
49   after = at;
50   advance(after, 4);
51   v.erase(at, after);
52   VERIFY(before._M_dereferenceable());
53   VERIFY(at._M_singular());
54 
55   // clear()
56   before = v.begin();
57   set<int>::iterator finish = v.end();
58   VERIFY(before._M_dereferenceable());
59   v.clear();
60   VERIFY(before._M_singular());
61   VERIFY(!finish._M_singular() && !finish._M_dereferenceable());
62 }
63 
main()64 int main()
65 {
66   test02();
67   return 0;
68 }
69